If the commands you're testing produce a lot of output, redirect it so that you can read both start and stop dates. Calculate the difference between the two dates.
如果您所测试的这些命令产生了大量的输出，可以对其进行重定向，以便能够阅读到开始和停止日期。
If the commands you're testing produce a lot of output, redirect it so that you can read both start and stop dates. Calculate the difference between the two dates.
如果您所测试的这些命令产生了大量的输出，可以对其进行重定向，以便能够阅读到开始和停止日期。
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